Windows only: Only a month after its last update, one of our favorite Windows utilities, CCleaner, has released a new update that now adds full support for Firefox 4 and IE 9 (both released last month) as well as several other improvements.

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Per its change log, CCleaner v3.05 adds, among other things: iTunes cookie management, new environment variables for user documents (e.g., %MyMusic%), registry cleaning for Windows Services, and cleaning for additional applications—notably, many IM and chat programs including Skype, AIM, and Pidgin.

Though it's not a major upgrade, it's an important one, since CCleaner now supports Windows users who have the latest browsers, whether you've switched from Chrome to Firefox 4 (like Whitson has) or are playing with IE9's new features. Of course, CCleaner still supports Chrome, Opera, and Safari too. (Given the Piriform developers' always-speedy improvements, no doubt as soon as new versions of those browsers come out, CCleaner will also update to support them.)